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BU821F, BU824, BU8241F

Table of contents:
Info of BU821F
Info of BU824
Info of BU8241F

BU821F, BU824, BU8241F Selling Leads, Datasheet

MFG:ROHM Package Cooled:TO-202 D/C:07+

BU821F, BU824, BU8241F Datasheet download

Five Points

Part Number: BU821F

MFG: ROHM

Package Cooled: TO-202

D/C: 07+

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BU8241F General Description

The BU8241F, BU8241FS, BU8242F, and BU8244F are ICs developed for use with cordless telephones, and are equipped with switching and mixing functions. In addition, these ICs are provided with an internal power save function which enables the circuit to be run on line current if the power supply fails, by connecting a switch between the circuit and a new handset, reducing line current consumption. A series of these ICs is also under development, based on the number of circuits.

BU8241F Maximum Ratings

Parameter	Symbol	Limits	Unit
Power supply voltage	V_DD	7	V
Input voltage	V_IN	GND-0.3~V_DD+0.3	V
Output voltage	V_OUT	GND-0.3~V_DD+0.3	V
Power dissipation	Pd	550 (BU8241F/BU8242F)*1	mW
		800 (BU8241FS) *2
		500 (BU8244F) *3
Operating temperature	Topr	-25~+75
Storage temperature	Tstg	-55~+125

*1 Reduced by 5.5mW for each increase in Ta of 1 over 25.
*2 Reduced by 8mW for each increase in Ta of 1 over 25.
*3 Reduced by 5mW for each increase in Ta of 1 over 25.

BU8241F Features

1) Eight input signals are selected and mixed by a cross-point, and output to eight pins (BU8241F/BU8241FS).
2) A power save mode enables the circuit to run on line current if the power supply fails.
1. Line current consumption reduced (IDD2 = 580A)
2. IN1 OUT1 and IN2 OUT2 only are on
3) Serial binary data input.
4) Low voltage and current consumption.

BU8241F Typical Application

Telephones, telephone answering machines, cordless telephones

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